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/* This file is part of the KDE project
* Copyright (C) 2007 Thomas Zander <zander@kde.org>
* Copyright (C) 2006 Gary Cramblitt <garycramblitt@comcast.net>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include "KoPagePreviewWidget.h"
#include <KoDpi.h>
#include <KoUnit.h>
#include <KoPageLayout.h>
#include <KoColumns.h>
#include <QPainter>
#include <WidgetsDebug.h>
class Q_DECL_HIDDEN KoPagePreviewWidget::Private
{
public:
KoPageLayout pageLayout;
KoColumns columns;
};
KoPagePreviewWidget::KoPagePreviewWidget(QWidget *parent)
: QWidget(parent)
, d(new Private)
{
setMinimumSize( 100, 100 );
}
KoPagePreviewWidget::~KoPagePreviewWidget()
{
delete d;
}
void KoPagePreviewWidget::paintEvent(QPaintEvent *event)
{
Q_UNUSED(event);
// resolution[XY] is in pixel per pt
qreal resolutionX = POINT_TO_INCH( static_cast<qreal>(KoDpi::dpiX()) );
qreal resolutionY = POINT_TO_INCH( static_cast<qreal>(KoDpi::dpiY()) );
qreal pageWidth = d->pageLayout.width * resolutionX;
qreal pageHeight = d->pageLayout.height * resolutionY;
const bool pageSpread = (d->pageLayout.bindingSide >= 0 && d->pageLayout.pageEdge >= 0);
qreal sheetWidth = pageWidth / (pageSpread?2:1);
qreal zoomH = (height() * 90 / 100) / pageHeight;
qreal zoomW = (width() * 90 / 100) / pageWidth;
qreal zoom = qMin( zoomW, zoomH );
pageWidth *= zoom;
sheetWidth *= zoom;
pageHeight *= zoom;
QPainter painter( this );
QRect page = QRectF((width() - pageWidth) / 2.0,
(height() - pageHeight) / 2.0, sheetWidth, pageHeight).toRect();
painter.save();
drawPage(painter, zoom, page, true);
painter.restore();
if(pageSpread) {
page.moveLeft(page.left() + (int) (sheetWidth));
painter.save();
drawPage(painter, zoom, page, false);
painter.restore();
}
painter.end();
// paint scale
}
void KoPagePreviewWidget::drawPage(QPainter &painter, qreal zoom, const QRect &dimensions, bool left)
{
painter.fillRect(dimensions, QBrush(palette().base()));
painter.setPen(QPen(palette().color(QPalette::Dark), 0));
painter.drawRect(dimensions);
// draw text areas
QRect textArea = dimensions;
if ((d->pageLayout.topMargin == 0 && d->pageLayout.bottomMargin == 0 &&
d->pageLayout.leftMargin == 0 && d->pageLayout.rightMargin == 0) ||
( d->pageLayout.pageEdge == 0 && d->pageLayout.bindingSide == 0)) {
// no margin
return;
}
else {
textArea.setTop(textArea.top() + qRound(zoom * d->pageLayout.topMargin));
textArea.setBottom(textArea.bottom() - qRound(zoom * d->pageLayout.bottomMargin));
qreal leftMargin, rightMargin;
if(d->pageLayout.bindingSide < 0) { // normal margins.
leftMargin = d->pageLayout.leftMargin;
rightMargin = d->pageLayout.rightMargin;
}
else { // margins mirrored for left/right pages
leftMargin = d->pageLayout.bindingSide;
rightMargin = d->pageLayout.pageEdge;
if(left)
qSwap(leftMargin, rightMargin);
}
textArea.setLeft(textArea.left() + qRound(zoom * leftMargin));
textArea.setRight(textArea.right() - qRound(zoom * rightMargin));
}
painter.setBrush( QBrush( palette().color(QPalette::ButtonText), Qt::HorPattern ) );
painter.setPen(QPen(palette().color(QPalette::Dark), 0));
// uniform columns?
if (d->columns.columnData.isEmpty()) {
qreal columnWidth = (textArea.width() + (d->columns.gapWidth * zoom)) / d->columns.count;
int width = qRound(columnWidth - d->columns.gapWidth * zoom);
for ( int i = 0; i < d->columns.count; ++i )
painter.drawRect( qRound(textArea.x() + i * columnWidth), textArea.y(), width, textArea.height());
} else {
qreal totalRelativeWidth = 0.0;
foreach(const KoColumns::ColumnDatum &cd, d->columns.columnData) {
totalRelativeWidth += cd.relativeWidth;
}
int relativeColumnXOffset = 0;
for (int i = 0; i < d->columns.count; i++) {
const KoColumns::ColumnDatum &columnDatum = d->columns.columnData.at(i);
const qreal columnWidth = textArea.width() * columnDatum.relativeWidth / totalRelativeWidth;
const qreal columnXOffset = textArea.width() * relativeColumnXOffset / totalRelativeWidth;
painter.drawRect( qRound(textArea.x() + columnXOffset + columnDatum.leftMargin * zoom),
qRound(textArea.y() + columnDatum.topMargin * zoom),
qRound(columnWidth - (columnDatum.leftMargin + columnDatum.rightMargin) * zoom),
qRound(textArea.height() - (columnDatum.topMargin + columnDatum.bottomMargin) * zoom));
relativeColumnXOffset += columnDatum.relativeWidth;
}
}
}
void KoPagePreviewWidget::setPageLayout(const KoPageLayout &layout)
{
d->pageLayout = layout;
update();
}
void KoPagePreviewWidget::setColumns(const KoColumns &columns)
{
d->columns = columns;
update();
}
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